An item composed of one or more materials, molded, compressed, and/or baked into a rigid covering of irregular shapes and sizes. it is designed to cover air ducts and/or air duct fittings used in air conditioning, heating, cooling, pressurizing and de-icing systems to restrict the dissipation of heat. it may completely or partially encase the item for which designed. it may be furnished with or without fillers, cement, and/or separate or attached accessories for installation, (excluding flexible air duct covering and rigid pipe and pipe fitting coverings used in construction and building materials). Excludes insulation blanket, thermal, aircraft; insulation pipe fitting covering, thermal; and insulation sleeving, thermal.
NSN 5935-01-574-7525
NSN 5920-01-094-7284
NSN 5960-01-433-3928
NSN 4140-00-105-0599
NSN 7035-00-890-7649
NSN 6685-00-895-1552
NSN 6110-01-339-2031
NSN 5920-01-644-2662
NSN 2925-00-115-5857
NSN 5975-01-090-7674
NSN 6130-01-557-9698
NSN 6620-01-326-8944